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1. (WO2018014691) METHOD AND DEVICE FOR ACQUIRING MEDIA DATA

Pub. No.:    WO/2018/014691    International Application No.:    PCT/CN2017/089161
Publication Date: Fri Jan 26 00:59:59 CET 2018 International Filing Date: Wed Jun 21 01:59:59 CEST 2017
IPC: H04N 21/2318
H04L 29/06
Applicants: HUAWEI TECHNOLOGIES CO., LTD.
华为技术有限公司
Inventors: DI, Peiyun
邸佩云
FAN, Yuqun
范宇群
LIU, Xin
刘欣
ZHAO, Yin
赵寅
Title: METHOD AND DEVICE FOR ACQUIRING MEDIA DATA
Abstract:
A method and device for acquiring media data, relating to the field of media transmission. The method comprises: acquiring a media presentation description file, wherein the media presentation description file comprises index fragment information; obtaining an index fragment according to the index fragment information; parsing the index fragment to obtain reference frame information corresponding to a data fragment; parsing the index fragment to obtain data fragment information; obtaining the reference frame according to the reference frame information corresponding to the data fragment; and obtaining the data fragment according to the data fragment information. A method based on a DASH technique is proposed with regard to the properties of a code stream encoded with a knowledge base technique. The method supports the application of the knowledge base encoding technique with minor syntax changes under the framework of a DASH standard protocol, so that a client can flexibly switch and play a code stream without wasting any bandwidth.